A measurement of energy or units of heat.
A unit of energy used to express the energy yield of foods and energy expenditure by the body; the amount of heat required to raise the temperature of 1 g of water through 1°C (from 14.5 to 15.5°C). Nutritionally the kilocalorie (1000 calories) is used (the amount of heat required to raise the temperature of 1 kg of water through 1°C), and is abbreviated as either kcal or Cal to avoid confusion with the cal. The calorie is not an SI unit, and correctly the Joule is used as the unit of energy, although kcal are widely used. 1 kcal = 4.18 kj; 1 kj = 0.24 kcal.
Required on nutrition label. Calories are supplied by carbohydrates, fat and protein. Calories from fat are obtained by multiplying grams of fat by 9. Calories from carbohydrates and protein are obtained by multiplying grams of carbohydrates or protein by 4.
The amount of heat necessary to raise the temperature of 1 gram of water 1 °C.
Calories are a measure of how much energy a person gets from a serving of this food.
The amount of heat (energy) required to raise the temperature of one gram of water from 14.5°C (58°F) to 15.5°C (60°F) at a constant pressure of one standard atmosphere.
A unit used by dieticians to express the amount of energy taken into the body from digested food. A calorie is defined as the amount of heat that will raise one gram of water by one degree Celsius.
A measurement of heat. In nutrition, calorie refers to the quantity of energy contained in foods.
Energy is measured in kilocalories. A kilocalorie is the amount of heat necessary to raise the temperature of 1 kg of distilled water by 1°C (centigrade). A kilocalorie is frequently called a Calorie (spelled with a capital C). 2. A calorie (spelled with a lower case c) is the amount of heat necessary to raise the temperature of 1 g of distilled water by 1°C. 3. 1 kcal = 1 Cal = 1000 cal. 4. A kilocalorie is a nutritional Calorie.
A unit of measurement of heat or energy, equivalent to the amount of heat needed to raise the temperature of 1g of water by 1°C.
The quantity of heat energy required to raise the temperature of one kilogram of water through 1°C. The term ‘Calorie’ is used in nutrition to mean the kilocalorie (1000 calories).
A measure of a unit of heat or energy.
A unit of energy. Classical nutritionists use the term Calorie or kilocalorie (kcal) to represent the amount of heat required to raise the temperature of 1 kg of water by 1°C. The international unit of energy is the joule. One Calorie or kilocalorie is equal to 4.184 kJ or 4.2 kJ. There are cogent reasons to express energy in terms of kilojoules. Nutritionists have realized that the energy provided by food is used for more than heat production. It is also used for mechanical work (muscle movement) and for electrical signaling (vision; neuronal messages) and is stored as chemical energy. The joule is 107 ergs where 1 erg is the amount of energy expended in accelerating a mass of 1 g by 1 cm/s. The international joule is defined as the energy liberated by one international ampere flowing through a resistance of one international ohm in 1 second. Even though the use of joules or kilojoules is being urged by international scientists as a means to ease the confusion in discussions about energy, students will still find the term Calorie or kcal in many texts and references. In some texts, the term calorie, spelled with a lower case “c,” is used. This heat is actually 1/1000 of the heat unit spelled with an upper case “C.” Physicists use the term calorie to represent the amount of heat required to raise the temperature of 1 g of water by 1°C. Note that this definition uses 1 g, not 1 kg as stated above. Even though it is not correct, the term calorie is used in some nutrition literature when in fact Calorie or kcal is intended.
Calorie is a term for a unit of measure for energy. One calorie is typically defined as the amount of heat required to raise 1 g of water by 1°C. The “joule” is often used internationally in place of the calorie, and one calorie is the equivalent of 4.184 joules. Nutritionists and dietitians usually refer to calories as Calories, which actually signifies kilocalories (kcal), since it would be cumbersome to refer to dietary energy or energy expenditure in calories.
A measurement of energy provided by food for use by the body. A difference exists in how the term is used popularly and in the scientific community. Scientifically, a calorie is 1/1,000 of a kilocalorie. Popularly, however, the term calorie is used sometimes interchangeably with the scientific term kilocalorie. Scientifically, a kilocalorie is a measure of the amount of heat required to raise the temperature of 1 kilogram of water 1 degree Celsius (centigrade). This measurement is used because it can be determined readily.
A unit of heat equal to the amount of heat required to raise the temperature of 1 gram of water from 14.5°C to 15.5°C (the 15° calorie). One Calorie (also known as the kilocalorie or kilogram calorie) is equal to 10(X) calories; this unit is used to indicate the energy value of foods. Except in this context, the calorie has largely been replaced by the joule (1 calorie = 4.1855 joules).
A unit of energy. Two units are called by this name. The small calorie, or gram calorie, is the amount of heat required to raise one gram of water one degree centigrade in temperature. The large Calorie or kilocalorie, which is used in dietetics and physiological processes, is the amount of heat required to raise one kilogram of water one degree centigrade in temperature. The number of Calories required to carry on the processes necessary for life and body warmth such as the beating of the heart, the movements of the chest in breathing, and the chemical activities of the secreting glands is, for an adult person of ordinary weight, somewhere in the neighbour-hood of 1,600. For ordinary sedentary occupations an individual requires about 2,500 Calories; for light muscular work slightly over 3,000 Calories; and for hard continuous labour around 4,000 Calories daily.
A unit of heat. A calorie may be equated to work or to other units of heat measurement. Small calories are converted to joules by multiplying by 4.1855.
Unit of energy supplied by food; equals 1 kilocalorie (1 kcal), the amount if heated required to raise the temperature of 1 kilogram of water 1° C.
A measurement of the energy content of food. The body needs calories as “fuel” to perform all of its functions, such as breathing, circulating the blood and physical activity.
Units used to measure the amount of energy released when nutrients are burned.
Common-use form of the word kilocalorie. A measure of the value of foods to produce heat and energy in the human body. One calorie is equal to the amount of heat required to raise the temperature of 1 gram of water 1°C.
A measure of the chemical energy provided by food. One calorie equals the amount of heat needed to raise the temperature of one gram of water one degree Celsius at 1 air pressure. One gram of carbohydrate or protein provides about four calories, while one gram of fat provides about nine calories.
The measure by which the energy content of a particular food item is determined is referred to as a unit. This unit is defined as the quantum of thermal energy that is necessary to increase the temperature of one kilogram of water by one degree centigrade.
In dietetics, the term calorie is used to measure the heat and energy-producing capacity of different foods. Specifically, one Calorie (with a capital “C”) is defined as the amount of heat required to raise the temperature of 1,000 grams of water by 1 degree Centigrade. It is important to note that the term “calorie” (with a lower case “c”) is also used in physics to measure the amount of heat required to raise the temperature of 1 gram of water by 1 degree Centigrade. When discussing nutrition and dietary needs, it is the Calorie that is typically used to measure the energy value of different foods, as it provides a more meaningful measure of the energy that can be derived from a given food.
A measurement of energy known as a calorie. A single calorie refers to the quantity of energy required to elevate the temperature of one gram of water by one degree Celsius. In the realm of medicine and dietetics, the term “calorie” is also utilized to signify a larger unit of energy referred to as a kilocalorie, which is equivalent to 1,000 calories.
Typically, when an individual consumes a quantity of calories that aligns with their energy expenditure, their body weight tends to remain stable. If calorie intake surpasses energy expenditure, weight gain is commonly observed. Conversely, when energy expenditure surpasses calorie intake, weight loss is typically experienced. Generally, fats contain a higher calorie content compared to proteins or carbohydrates.
Energy can also be quantified in joules, with the equivalence of 1 calorie being equal to 4.2 joules.
A heat unit, representing the quantity of heat needed to elevate the temperature of one gram of water by one degree Celsius. This unit is employed in determining the nutritional value of a diet.